toulmin: definition argument

In the past week or so, my English class has been preparing to write their first argument paper. The paper we have to write is called a definition paper. There are several types of definition papers, but I decided to do a membership in a particular class type. The questioned that is asked is "Does it fit the criteria for that category?" I decided to write my paper on something that inspires and interest me. Something that stirs conflict in some of my group topics. My topic for a definition argument is "Is dancing a sport?"
In preparation for this essay, we were assigned to do the Toulmin. This helps us write our paper and creates much brainstorming ideas. The order that I will be using is first the enthymeme which has the claim and reason in it. Second, the warrant or assumption. Third, the backing and fourth the evidence.

Enthymeme: Dancing is a sport because it follows the characteristics of what a sport should entitle which is competition, sportsmanship, dedication, empowerment, and etc.

Claim: Dancing is a sport
Reason: because it follows the characteristics of what a sport should entitle which is competition, sportsmanship, dedication, empowerment, and etc.

Backing:
First I will state what a sport is and compare it to the attributes of dancing
A sport is "an activity that is governed by a set of rules or customs and often engaged in competitively; refers to activities where the physical capabilities of the competitor are the sole or primary determiner of the outcome (winning or losing)"
Another defintion of a sport is a person living up to the ideal of sportsmanship, a companionable person; styled in a manner suitable for causal or informal wear; amuse oneself
Many people do not know that dancing is really competitive just like all sports are. Just because we do not run up and down a court or field does not mean that we are not physically fit. Dancers can do many things that the average football or basketball player does not have and needs. Dancing would acutally stregthen their ability to jump high. As for soccer, dancing would help with their flexibility with the ball to be able to kick higher. As for baseball, dancing would help the players reach further to catch the ball if they were more flexible.
Many people do not realize how much time and dedication a dancer has to put in before a big competition. Dancers compete with the same mind frame as a football player does "To win." The only difference between our competition and their tournaments is that we compete against mulitiple teams to where they compete against one team.

More Backing:
Another side of the argument is that when people think of sports they think of a sport to have manly attributes. In dancing, you do not see that many men dancing. Men think of a sport as having strength, endurance, and roughness. Men have issues trying to set a sport equal to dancing because they see it to be to graceful and not up to the title that a sport entitles.

Evidence:
For this part of the paper, I am going to interview some people on the issue of "Is dancing a sport?" I will be interviewing a teenage guy to get our generation of guys perspectives, and I will be interviewing an owner of a dance studio to get her perspective of the topic.